561558488852 has 6 divisors (see below), whose sum is σ = 982727355498. Its totient is φ = 280779244424.

The previous prime is 561558488819. The next prime is 561558488891. The reversal of 561558488852 is 258884855165.

It can be written as a sum of positive squares in only one way, i.e., 555630104836 + 5928384016 = 745406^2 + 76996^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70194811103 + ... + 70194811110.

It is an arithmetic number, because the mean of its divisors is an integer number (163787892583).

Almost surely, 2^561558488852 is an apocalyptic number.

It is an amenable number.

561558488852 is a deficient number, since it is larger than the sum of its proper divisors (421168866646).

561558488852 is a wasteful number, since it uses less digits than its factorization.

561558488852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140389622217 (or 140389622215 counting only the distinct ones).

The product of its digits is 122880000, while the sum is 65.

The spelling of 561558488852 in words is "five hundred sixty-one billion, five hundred fifty-eight million, four hundred eighty-eight thousand, eight hundred fifty-two".